microtest® Test Kit Specifications

microtest Iron PHE

1,10-Phenanthroline: In the pH range 2.9 – 3.5 ferrous iron (Fe2+) forms an orange-red complex with 1,10-phenanthroline. The intensity of its colour is related to the iron concentration. Ferric iron (Fe3+) is reduced to Fe2+ prior to the measurement.

Number of Tests

80

Interferences

The test is suitable for freshwater and seawater. Interferences are caused by cyanide, nitrite, chromium, zinc (>10 mg/L), cobalt, copper (>5 mg/L) and nickel (>2 mg/L). Only dissolved iron will be determined.

Measuring Range

The standard measuring range is 0.2 – 8 mg/L. The colour comparator has 6 colour fields: 0.2–0.5–1–2–4–8 mg/L. For higher iron concentrations, the sample has to be diluted. A 1:4 sample dilution can be carried out easily, thus extending the measuring range to 32 mg/L.

Shelf Life

2 years

Applications

Determination of iron in ground waters (bore water); monitoring of steel corrosion in industrial water treatment.